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  1. Replies
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    IIRC, the early MFM and ESDI controllers used in...

    IIRC, the early MFM and ESDI controllers used in the PS/2 Model 60 and 80 were 16-bit and would work in either unit. I think IBM released an upgraded Model 60 with the controller and drive originally...
  2. https://www.vfrazee.com/ms-dos/6.22/help/commands%...

    https://www.vfrazee.com/ms-dos/6.22/help/commands%20for%20defining%20multiple%20configurations.htm shows some examples of making choices within a CONFIG.SYS and AUTOEXEC.BAT to give different boot...
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    You have several alternatives: Get an 8-bit VGA...

    You have several alternatives:
    Get an 8-bit VGA card. Probably the easiest since many displays still retain VGA compatibility though some widescreen monitors will automatically scale the image to...
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    I liked all the Heathkit systems I had. I think...

    I liked all the Heathkit systems I had. I think it would be better to have Heathkit related topics alongside similar systems from other vendors. Except for the H8, most of the Heathkit computers were...
  5. What software is it? With 32-bit XP, there are...

    What software is it? With 32-bit XP, there are several cases where it may not work. If the software uses VXDs (to talk with an ISA card for example), the software will not run under XP. If the...
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    Interesting card. I have never seen a CGA/HGC...

    Interesting card. I have never seen a CGA/HGC card combined with a floppy controller. Looking at other V6363 cards with parallel ports, the jumpers and switches should choose between MDA/Hercules...
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    Network World has the earliest description of the...

    Network World has the earliest description of the 7552 online from 1986...
  8. Thread: Overlooked?

    by krebizfan
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    It wasn't long before the cost reductions to disk...

    It wasn't long before the cost reductions to disk drives and controllers brought the PC clones down to the under $1,000 range which competed nicely against disk drive equipped offerings from...
  9. Thread: Overlooked?

    by krebizfan
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    313

    The TI59 mailing list seems to have slowed a lot....

    The TI59 mailing list seems to have slowed a lot. Was very active up to a few years ago.

    HPMuseum.org has frequent discussions of the TIs in the " Not remotely HP Calculators" section of the...
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    7552-040 h IBM PC/AT System Unit (10MHz, 512KB)...

    7552-040 h IBM PC/AT System Unit (10MHz, 512KB)
    Hardened, for use without keyboard or display via Remote Terminal Interface
    7552-540 h IBM PC/AT System Unit (10MHz, 512KB)
    Hardened, 20MB fixed...
  11. Thread: Overlooked?

    by krebizfan
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    313

    I tend to think of the HP 9830 as one of the more...

    I tend to think of the HP 9830 as one of the more important Personal Computer precursors, something that could be pointed at to indicate to investors that there was a market for a similar but cheaper...
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    That article slightly understates the use of EMS...

    That article slightly understates the use of EMS under Windows. If there are additional EMS page frames in addition to the data frame, code can be move into it. It might use a few hundred KB of EMS...
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    One can use EMS to enable Large Page Frame EMS...

    One can use EMS to enable Large Page Frame EMS under real mode Windows 3.0 just like Windows 2. That would allow one to run multiple larger applications at the same time. I think Excel was one of the...
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    If you had 4 MB+ of RAM, it wasn't too bad. Just...

    If you had 4 MB+ of RAM, it wasn't too bad. Just don't try to run the last Win16 programs released. Office 4 is such that each program will want more memory than a reasonable 286 can offer. WinWord 1...
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    The key placement looks like one of the standard...

    The key placement looks like one of the standard terminal keyboards. Not sure which one specifically, it doesn't exactly match any I used.

    The card edge connectors seem to have 50 pins, maybe for...
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    The internal cache can be turned off. Pin W5...

    The internal cache can be turned off. Pin W5 turns on/off the cache while pin B13 is used to determine if the 586 is in WriteBack or WriteThrough mode.
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    Not all that much difference. Some of the very...

    Not all that much difference. Some of the very early 386SX computers used 286 motherboards with a tiny daughtercard to hold the 386SX. Everex was one that did that in the rush to get a 386SX out the...
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    3 16 bit ISA slots and the world's slowest hard...

    3 16 bit ISA slots and the world's slowest hard drive. Nice turbo AT clone except for the hard drive.
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    There were kits with the higher clock oscillator...

    There were kits with the higher clock oscillator and updated BIOS to go along with the new CPU. Note that the 10 MHz AT variant from IBM was a bit unreliable so pushing that far might be unwise. It...
  20. John Elliott did it so I know it is possible. See...

    John Elliott did it so I know it is possible. See https://www.seasip.info/AmstradXT/qanda.html#8

    When does the error show up? Seems to be cut off - "yboard disk." Try using settings similar to...
  21. I can think of no benefit in not using the...

    I can think of no benefit in not using the external CD drive's active termination.
  22. How are the cables being run? IIRC, most SCSI...

    How are the cables being run? IIRC, most SCSI adapters would need two terminators: one on the internal cable and a second on the external cable. Generally, active termination is better but the...
  23. The original NT4 encryption was a mere 40 bits....

    The original NT4 encryption was a mere 40 bits. The export versions got upgraded to 56 bits very late in NT4's life span, long after 40 bit encryption was proven to be easily broken.
  24. Welcome to the forum. Discussions of Pentium...

    Welcome to the forum.

    Discussions of Pentium III and 4 happen here but primarily in the context of a "tweener" - a machine that can read/write floppy disks but also has the ability to easily...
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    The Tandon TM-100 seems to have the exact same...

    The Tandon TM-100 seems to have the exact same power requirements as the Shugart drives. Rounding up, if both drives ran at the same time, the combined power consumption would be less than 30 watts....
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